Some may prefer the sound of 2 channel music being sent through 5.1 and that's fine, it's a personal choice and each to their own, but the reality is most music was recorded in 2 channel and IF you want to reproduce it the way the producer intended it to sound, it needs to be decoded in stereo. The idea is that you are at the concert or in the studio and the artist is right in front of you playing. Not coming at you from all directions...